En bref
- CVE-2026-9739 est une vulnérabilité CRITIQUE (CVSS 9.4) touchant github.com/googleapis/mcp-toolbox.
- Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 0.28%, plus élevée que 20.4% des vulnérabilités.
- Correctif : mettre à jour vers 1.2.0 ou plus récent.
Description
Vulnerable to DNS rebinding attacks when using SSE (http://b/499408790). During the beta phase, we implemented allowed-origins and allowed-hosts flags to align with MCP security guidelines. However, the hardcoded Access-Control-Allow-Origin: * header in the SSE initialization handler was inadvertently retained. This vulnerability specifically impacts users connecting via Toolbox using SSE under specification v2024-11-05.
NVD description
Vulnerable to DNS rebinding attacks when using SSE (http://b/499408790). During the beta phase, we implemented `allowed-origins` and `allowed-hosts` flags to align with MCP security guidelines. However, the hardcoded `Access-Control-Allow-Origin: *` header in the SSE initialization handler was inadvertently retained. This vulnerability specifically impacts users connecting via Toolbox using SSE under specification v2024-11-05.
Autres vulnérabilités de github.com/googleapis/mcp-toolbox
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